well my engine runs fine when it started but the problem occure after the engine is warmed sometimes then engine even stall. there is no engine code and the engine check light is not on....... I have new plugs and new wire...... where else should I check?

 

maf maybe?

 

idle valve is sticking most likely..

 

I have the same problem. I don't know if I fixed it yet or not.

Are you running rich?

What kind of gas are you running?

If you can rev past 2500 it's not the MAF.

It's possible that the spark isn't powerful enough because of an old distributor cap and rotor.

 

I am using 87. well yea maybe I should change my distributor cap. thanks for the advise